Discharge-valve for maltstersj steep-tanks



fNqMoaem- 2 sheets-sheet 1.

P. W. WoLP. DISCHARGE VALVE FOR lMMIS'IElS STEEP TANKS.` 10.282.471.Patented July 31,1883..

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Sheet 2.

`(No Model.)` 2 `sheetsa F. W. WOLF.

DISCHARGE VALVE OR MALSTERS STEBP TANKS.

181082828177. .Patentedquly 81, 1888.

lzgzssesf y UNITED STATES l PATENT OFFICE.

FREDERICK w. WOLF, on oHIoAGQiLL'INoIs.

DISCHARGE-VALVE FoR M,4\|.Tsr|-:RsJ sTEEP-TANKS.'

SPECIFICATION forming part of Letters Patent No. 282,477, dated July31h, 1883.

\ Application mea 1p1-11.30, 185s. (No model.) 4

To aZZ whom it may concern.- f v Be it known that I, FREDERICK-W: WOLF,a citizen of the United States, residing at 4 Chicago, in the county ofCook and State of 5 Illinois, have invented certain new and usefulImprovements in Discharge-Valves for Maltsters Steep-Tanks; and I herebydeclare the following to be afull, clear, and exact description of thesame. l 1o My present invention is an improvement upon a device for thesame purpose for which Letters Patent ofthe United States No. 187, 210,dated February 6, 1877, were granted to me, and which has since i beenextensively introi 5 duced into malt-houses. The practical applicationof my device last referred to has led to the discovery of the followingimperfections: Toperate the device it is adjusted to the bottom,hoppered or straight, of Ta steep-tank, eo for the purpose of permittingby the means of itsl internal construction the draining off ofthe'liquid and washing of the material contained in the tank and thedischarge of the material itself. It is found, however, for one 2 5thing, that the emptying-tube is inconveniently long, and further, andmore particularly, that the grain which enters the chamber formed byclosing the grain shut-off valve to allow the liquid to escape throughthe water-discharge v Y 3o swells to such a degree that it chokes up thei screen, thus preventing the liquid from escap-l ing, and, besides, thepressure of the mass of grain and liquid inthe tank upon the grain inthe chamber packs the particles of the latter 3 5 so closely togetherthat the liquid cannot `get between them, whereby the device is rendered`inoperative until the cause of the trouble is removed, which requirestime-and labor, be? sides being very annoying. It is also very 4odesirable to drain off the liquid from the tank withoutpermitting any ofthe mass of grain to enter the valve-chamber by allowing the waterin`which it is being steeped` to escape,

and supplying fresh water, which operation 4 5 may be repeated withoutgreat trouble or loss of time as often as may be necessary to steep thegrain and avoid any disagreeable odor in the same. To overcome theseobjections I have invented the device of which the following is an exactdescription. Y 5o Referring to the drawings, Figure lis a rear elevationof my device, having a portion of the hand-wheel broken away to show adetail;

Fig. 2, a vertical section of the same, and Fig.

3 a plan view of a detail. 55

A is a funnel-shaped strainer, more converging in form than the bottomof the tank L in which it is placed, and having perforations in itsbody` too small to permit the passage of particlesof the grain beingsteeped, but al- 6o lowing the `water to drain off, by way of the spacebetween the bottom of the tank and the strainer, through a perforatedbutterlyvalve, D. The spout of the strainer A fits closely Within anannular top piece, B, hav- 65 ing a flange or rim, o, extending aroundits upper surface, and made flaring to receive the hopp'ered bottom ofthe tank Il, to which it is secured, and /a flange or rim, t, around itslower surface, provided with bolt-holes through 7o which the bolts tpassto secure the device to the top piece, B. This top piece, B, preferablyof iron, is cast with strengthening-ribs s between the rims or flanges.

C, is a chamber, constituting the emptying- 7 5 tube when unobstructedby the valve E, which would then lie flush with the side, as indicatedby the dotted lines in Fig. 2 of the drawings. The perforatedbutterfly-valve D is of the form shown to flt closely within theannular8o top piece, B, against the edges of the spout of y the strainer A. Itis secured in position in a manner that will allow the leaves to foldtogether within the chamber C by screwing the ends of the bar, providedwith screw-holes for 8 5 the purpose, and to which each leaf is hinged,into recesses, also having threaded holes to re- `ceive the screws,formed one on each side of ter, for convenience of illustration,occupying the position indicated by the dotted lines in Fig. 2 of thedrawings, is lowered to the position shown by the full lines in thedrawings, whereby the valve-head is made to iit close against theshoulders m and m', which form a valve-seat within the chamber G, toseparate the upper portion from the lower. If, now, the screw Z, whichis provided with a handwheel, y, and which works within the female screwmito force the valve F (the latter being loosely hung upon shoulders 7c,formed upon the two inner sides of the chamber II, by means of the armsi, bent at right angles and projecting backward from the upper side ofthe valve F) against the frame, holding the screen G flush with the sideof the chamber C, thereby preventing the escape of the liquid throughit, is loosened, it falls backA byits own weight, or, in case therubberpacking-sticks, by the additional action of a suitable spring, h,which it is caused to compress when'closed, thus permitting the liquidto pass through the screen G into the passage H, and thence into thesewer, with which it is suitably connected.

The screw-valve E consists of the valve-head proper, ascrew, g, whosepointturns within a suitable recess in the back of the valve-head, andthe hand-wheel n. The thread of the screw g works within a female screw,f, the latter being loosely supported by means of arms e within apivoted link, I, as shown, the said link being in turn supported by thesaid arms upon the recessed projections d, which extend in an outwarddirection from the frame of the device. The link I terminates at itsupper sides in two diverging arms, c, which are made annular at theirextremities to receive the horizontal bolt K, which also rests near itsextremities within holes formed in the projections b.

The holes in the projecting arms of the link are oval in form andsufiiciently large to allow the link to be raised from its position inthe recesses formed in the projections d.

When it is desired to remove the valve E from the position shown by thefull lines in the drawings to that indicated by the dotted lines in Fig.2, a few turns of the hand-wheel bring the valve-seat flush with theinside wall ofthe device, as shown by the dotted lines, whereby thegrain in the vat will have an unobstructed passage .through the chamberC.

Both the the valves E and F are packed to form tight joints againsttheir respective shoulders. To form this packing an-d make it effectivein every way, the inner face of each valve-head is provided with arectangular dovetailed recess. Into this recess a piece of vulcanizedrubber of like shape and dimensions is forced, and it fills up therecess in the face of the valve-head by its expansion after beingcontracted sufficiently to permit of its insertion into the recess. Itis found that upon contact with the iron fora time the sulphur containedin the vulcanized rubber acts upon it to form a powerful cement, thusmore firmly securing the packing in its place.

The object of the spring a is to bring the bolt Kland valve-head Ecloser together when in the position indicated by the dotted lines, toprevent the projecting rubber constituting the packing from catchingwhen the valve is being closed.

yFor convenience in construction, it is desirable to form the partinclosing the chamber C and that inclosing the chamber H separately.Each may be cast with projecting lips to tit into each other, andsecurely bolted together.

What I claim as new, and desire to'secure by Letters Patent, is-

l. kIn a discharging device for maltsters steep-tanks, the perforatedbutteriiy-valve D, secured within the same, in combination withmechanism for operating the said valve, substantially as described, andfor the purpose set forth.

2. In a discharging device for maltsters steep-tanks, the buttery-valveI), secured within the same, in combination with the strainer A andwithmechanism for operating the said valve, substantially as described.

3. In a discharging device for maltsters steep-tanks, the valve E, incombination with mechanism for adjusting thesame in position against theshoulders m and m within the chamber C, and for causing it to lie flushwith the side of the said chamber, said mechanism consisting of thescrew g and hand-wh`eel n, female screw f, arms e, forming part of andloosely supporting link I upon the recessed projections d, the said linkterminating in diverging arms c, made annular at their eX- IOO I'Io

tremities to receive the horizontal bolt K,

which rests within locks b, and spring a, the whole being arranged tooperate substantially as described.

4; In a discharging device for maltsters steep-tanks, the combination,with the waterescape pipe II, leading from the chamber C, of the valveF, provided at its upper endwith the backward-projecting `arms z', bentat right angles, to rest upon the shoulders 7c, formed one upon eachinner side of the chamber H, screw Z, provided with a hand-wheel, y,female screw x, screen G, and spring h, substantially as and for thepurpose set forth.

5. In a discharging device forfmaltsters steep-tanks, the combination ofthe butteriiyvalve I), secured within the same and having mechanism tooperate it, the strainer A, valve E, provided with mechanism to adjustit in position within the chamber LC and to bring l esem? l s it' Hushwith the sifle of the said chamber, said side of the chamber H, screw Z,provided with a mechanism consisting of the female 4screw f,hand-wh`eel, y, spring 7L, and screen G, the 1o having arms e, link I7having converging arms Whole being constructed and arranged to op* c;recessed proj ections. d, horizontal bolt K, crate-substantially asdescribed.

i 5 resting within che holes b, spring a, Valve F, K FREDERICK XV. WOLR"t loosely hung by means of the backward-pro- In presence of jectingarms i, bent at right angles to rest upon WM. H. DYRENFORTH,

Jche shoulders 7c, formed one uponveaoh inner EDW. MCCAFFREY.A

